Head to head · Agent harnesses · October 2026 research run

Sculptor vs Vibe-Trading

Vibe-Trading scores 57.8 (C) on agent readiness against Sculptor's 53.1 (D), and leads in 5 of 7 scored categories. Both do agent harnesses.

Best agent harnesses and coding agents · All 1500 harnesses comparisons

Which one, for what

Sculptor D

Best for Developers who want parallel coding agents in isolated workspaces and are fine with a research preview.

Also in its favour

  • No incidents deducted, where Vibe-Trading loses 9 points for them

Watch for

Labelled an experimental research preview that may change drastically

Vibe-Trading C

Best for A person or a pipeline that wants a ready-made finance research agent over free market data, with backtests, swarm reviews and exports, run on their own machine or used as an MCP server by another agent.

Ahead on

  • Reliability, 63 against 43
  • Schema & documentation, 72 against 45
  • Agent ergonomics, 67 against 50
  • Security & auth, 70 against 57
  • Maintenance & community, 82 against 75

Also in its favour

  • Runs on your own machine
  • Free to start without a card

Watch for

Three advisories published 2 October 2026 cover 0.1.0 to 0.1.6, two critical, and 0.1.16's email TLS and cross-site fixes got no advisory

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Schema & documentation Vibe-Trading +27

Sculptor 45

Harness reading. A README, specs and agent docs in the repository; no API reference (45).

Vibe-Trading 72

Harness reading of the lines, as for nanobot. The MCP server's tools take typed JSON Schema inputs generated from Python signatures through FastMCP, with a string output schema, and the API server serves FastAPI's OpenAPI file locally (keyless on loopback, behind the key otherwise). No published OpenAPI file or tool manifest outside the running program (20 of 25). No llms.txt on vibetrading.wiki, where /llms.txt redirects to the home page, and the docs are drawn by script from content.en.js. The repository carries Markdown READMEs in seven languages and an agent skill file, agent/SKILL.md (5 of 10). Tool descriptions say what each does, its arguments and what to call first, such as list_skills() before load_skill. The server's own header says every tool is read-only apart from refresh_strategy_evidence, while write_file is also exposed (14 of 20). Inputs are typed, but many choices are free strings (protocol, risk_tier, format) and several take free dictionaries (8 of 15). Many worked examples in the README and a troubleshooting page that names failure states such as no_progress and the 403 from another device; tool errors come back as JSON with an error_type (12 of 15). Dated CHANGELOG.md, GitHub release tags and versioned docs, though the docs still name 0.1.16 as latest (13 of 15).

Reliability Vibe-Trading +20

Sculptor 43

Local software. Desktop downloads for Mac (Apple Silicon), Linux and Linux ARM64 (20). checks.yml and a PR gate run on the repository; pass state not read (15). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent (0). sculptor-v tags up to v0.49.0, no changelog file (8). 0.x and labelled a research preview (0). 20 + 15 + 0 + 8 + 0 = 43.

Vibe-Trading 63

Read with the local-software lines, as for nanobot and Agent Zero, since the owner runs it. vibe-trading-ai installs from PyPI for Python 3.11 or newer, with classifiers for 3.11 to 3.13, and a Docker Compose setup ships in the repository (20). A CI workflow runs the test suite on pushes and pull requests to main, with hash-locked dependency checks on Linux, macOS and Windows, and the repository holds 961 test files. Whether the latest runs on main passed couldn't be read, because GitHub's Actions pages weren't reachable (15 of 25). The repository page showed 7 open issues and 57 open pull requests on 25 October 2026, per that check (GitHub's pages answer 403 on 2 November), against 771 commits in the 30 days to 2 November, and the 0.1.18 notes list two known issues already fixed on main. Issue threads weren't read (18 of 25). CHANGELOG.md says it follows Semantic Versioning, with dated entries from 0.1.8, a Known issues section and an upgrade note for the LangChain 1.x move in 0.1.10, but on 0.x breaking changes ride in minor versions and there is no Breaking section (10 of 15). Version 0.1.18 with the classifier Development Status 4, Beta (0).

Agent ergonomics Vibe-Trading +17

Sculptor 50

Harness reading. Workspaces as isolated copies, review and merge back, and built-in skills (50).

Vibe-Trading 67

Harness reading, scored on what an agent or script driving it has to supply. The MCP server registers 82 tools, with about 44,300 characters of descriptions across the 71 defined in the server file, and no toolsets or read-only subset (5). Since 0.1.18 the built-in agent loads tool schemas on demand, and skills load by section and offset, which keeps its own context smaller (plus 7, 12 of 25). Rows are capped by default, read_run_artifact pages by offset, row count and columns, oversized results are written to the run directory, the agent stops after eight tool iterations without a new result, and goals take token, turn and time budgets (18 of 20). JSON error envelopes with a type, a --json mode for vibe-trading run and a troubleshooting page, with no documented exit codes (15 of 20). No readOnlyHint or destructiveHint annotations on MCP tools. An identical call is refused from its second failure, failed swarm runs resume with completed tasks kept, interrupted web replies are checkpointed and TAP-routed Alpaca orders carry a deterministic client_order_id (12 of 20). pip install and vibe-trading init start it, market data works with no key, and a model key, Ollama or an existing Codex, Copilot or Claude Code login is required. Python only, with a REST API and no SDK in a second language (10 of 15).

Security & auth Vibe-Trading +13

Sculptor 57

Harness reading. Product analytics, error reporting and session recording default to off in the user config, and the app asks for a telemetry level and privacy consent at first run; PostHog runs on the front end only for now (25 of 30). Each workspace is an isolated copy of the code (14 of 20). No prompt-injection guidance (5). No audit log (5). SECURITY.md (8). 25 + 14 + 5 + 5 + 8 = 57.

Vibe-Trading 70

Harness reading used for nanobot and goose. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. No telemetry code was found in the source at v0.1.18, and the only call to PyPI is the owner-run vibe-trading update. The API answers only loopback clients without API_AUTH_KEY, Docker binds 127.0.0.1 and runs as user vibe, and the MCP HTTP transport binds 127.0.0.1 with a Host and Origin allow-list against DNS rebinding but no token. Broker keys go to the OS keyring; model keys sit in agent/.env in clear text. The docs carry no statement that nothing is collected (24). Live orders need a mandate that only the owner commits through the web UI or API, with hard caps and a kill switch, and an optional TAP mode waits for human approval of each Alpaca write. No order tool is exposed over MCP, and shell tools are off on the API and every MCP transport unless enabled. The local CLI runs bash and file writes without asking, and generated backtest code runs as a network-capable subprocess with a narrowed environment and no sandbox (13). Reader and search tools add warning-only security_warnings from regex rules, and external MCP tool hints are treated as untrusted in the source. The claude-cli provider's tool filters are described as convenience filters, not a boundary (9). A live-action ledger written append-only with a hash-chained copy, run cards with hashed execution records, tool traces and per-run token usage (13). SECURITY.md with private advisory reporting and a five-business-day acknowledgement. Three advisories were published on 2 October 2026 with CVE identifiers, five months after the 0.1.7 fix, while the email TLS and cross-site settings fixes in 0.1.16 got none. No security.txt and no bounty (11). 24+13+9+13+11 = 70.

Maintenance & community Vibe-Trading +7

Sculptor 75

Commits on 6 November 2026 and frequent tagged versions (30). More than three releases in 90 days (20). GitHub issues and pull requests weren't read (GitHub's pages refuse these sessions), so that line is scored absent; the README says Imbue can't take many outside contributions yet (0). Current official downloads (15). CI on pull requests (10). 30 + 20 + 0 + 15 + 10 = 75.

Vibe-Trading 82

v0.1.18 was tagged on 21 October 2026, 12 days before this check (30). Six releases in the 90 days from 4 August, 0.1.13 (tag 10 August) to 0.1.18, from the repository's tags; PyPI couldn't be read on 2 November (20). 771 commits on main in the 30 days to 2 November, 233 of them after v0.1.18, the last on 2 November; the 25 October repository page showed 7 open issues and 57 open pull requests, not re-read. Issue and pull request threads weren't read, a judgement call (18 of 25). An MCP server that isn't in the official MCP registry (searches for vibe-trading and hkuds on 2 November 2026 found nothing). It is published on PyPI, as a Docker setup and on ClawHub (5 of 15). Hash-locked requirements checked in CI on three operating systems, Dependabot set to monthly, and dependency floors raised for named CVEs, most recently on 29 October (9 of 10). 30+20+18+5+9 = 82.

Score by category

CategoryWeight this runSculptorVibe-TradingEdge
Reliability16%204363Vibe-Trading +20
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.24572Vibe-Trading +27
Agent ergonomics13%16.25067Vibe-Trading +17
Security & auth14%17.55770Vibe-Trading +13
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87582Vibe-Trading +7
Transparency & trust7%8.85753Sculptor +4
Negative events≤150-9
TotalD 53.1/100C 57.8/100

Facts side by side

FactSculptorVibe-Trading
KindAgent harnessAgent harness
VendorImbue, Inc.HKUDS
Hosted endpointno (local only)no (local only)
Transportsstdio, Streamable HTTP, SSE (legacy)
AuthNoneNone
PricingFreeFree
x402nono
LicenceMITMIT
Tools exposednone82
Read-only variant documentednono
llms.txtnono
Last release2026-11-062026-10-21
Terms last updatedno document linkedno document linked
Privacy policy last updatedno document linkedno document linked
Popularitynone37k stars

How the scores have moved

Verdicts

Sculptor

Imbue's open-source app for parallel coding agents in isolated workspaces, with telemetry off until you choose otherwise. It's an experimental research preview that warns of bugs and drastic changes, Mac and Linux only, with no changelog.

Vibe-Trading

Vibe-Trading runs on the owner's machine under the MIT licence, ships near-daily fixes with a dated changelog, and keeps order tools out of its MCP server, with live orders gated by an owner-committed mandate. Three advisories, two critical, covered versions before 0.1.7, a 0.1.16 credential fix got no advisory, and the local CLI runs shell commands without asking.

Before you call either

Sculptor

  1. Download from the README's links, connect a repository and create a workspace before prompting
  2. Review the diff before merging a workspace back to main

Vibe-Trading

  1. Run 0.1.16 or later. Earlier versions carry three published advisories, including unauthenticated API access with an RCE chain, and send the email password without checking TLS certificates
  2. Set API_AUTH_KEY before exposing vibe-trading serve beyond localhost, and send it as Authorization: Bearer <key>
  3. Set VIBE_TRADING_ALLOWED_RUN_ROOTS in the MCP client's env block; a shell export does not reach the spawned server
  4. Use vibe-trading run -p "..." --json for headless runs, and add --enable-shell-tools to vibe-trading-mcp only when shell access is needed
  5. Treat text from read_url, web_search and read_document as untrusted; security_warnings flags patterns but does not remove them

Questions

Which is better for AI agents, Sculptor or Vibe-Trading?

Vibe-Trading scores 57.8 (C) on agent readiness against Sculptor's 53.1 (D), and leads in 5 of 7 scored categories.

Are Sculptor and Vibe-Trading open source?

Yes. Sculptor is open source (MIT). Vibe-Trading is open source (MIT).

Other comparisons with Sculptor or Vibe-Trading

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